Apparatus for cooling liquids



De@ 26, 1933. R. H. BREWER APPARATUS FOR COOLING LIQUIDS Filed May 18,1931 2 Sheets-Sheet l INVENTOR.

R/L'HHRD H-BRWR @ULM MW A TTORNE Y.

Dec. 26, 1933. R- BREWER 1,940,741

APPARATUS FOR COOLING LIQUIDS Filed May 18, 1931 2 Sheets-Sheet 2 muv IN VEN TOR.

RIPHHRU HBREWER Rl t l `WWMW ATTORNEY.

Patented Dec. 26, 1933 Lt-@dfi ArrAnA'rUs Fon COOLNG LIQUIDS Richard H.Brewer, rWarren, Ohio, assigner to The Halsey W. Taylor Company, Warren,Ohio, a corporation of Ohio Application May 18, 1931. Serial No. 538,117

3 Claims.

sure to and from a drinking fountain, as where the latter is connectedto the public water systern. The demands made on such apparatus are.

very heavy at times, and in order to insure an adequate supply of coolWater it is necessary tor employ chemical refrigerante which would havea deleterious eect upon patrons should. there be any contact between thesupply of water and the refrigerant. rEhe general object of the presentinvention is to provide a cooling unit which is so separated fromthe'water to be cooled that all danger of the refrigerant coming incontact with the drinking water, due to a breakin the cooling unit, orother causes, will be obviated. A further object of my invention is tomount the cooling unit on the'removable head of the cooling tank so thatthe unit may be readily installed and is readily removed intact.

Other and more' detailed objects of the invention Will be apparent asthe specication is read in connection with the accompanying drawings, inwhich Fig. 1 shows ay longitudinal section through the assembled coolingunit; Fig. 2 a cooling coil disconnected from its tank; Figs. 3 and 4are cross sections on lines 3 3 and 4 4, respectively, of Fig. 1; andFig. 5 shows a modied form of cooling .unit embodying my invention.

Referring more particularly to the drawings the numeral 5 denotesgenerally a' cooling apparatus adapted for installation in a drinkingfountain or the like, not shown, The apparatus comprises an outer watertank or cylinder 6 connected with a source of water supply and an innercylinder or shell l which contains the cooling coil 8. Water to becooled is delivered, to tank 6, through pipe 9 direct from the watermain, not shown, and is dispensed from pipe 9. Y The front end wall 10of tank 6 is formed with a large central opening 11 of slightly greaterdiameter than that of the cylinder or shell '2, and the latter ispositioned axially of the opening 11 with its open end projecting intothe said opening and iiush with outer face of end wall 10. A heavy steel.ring 12 which surrounds the open end of shell 'l and is welded thereto,is also welded to the end wall l, thus connecting these parts together.A head 13 seats against the outer face of ring 12 and is secured theretoby bolts 14, the ring being suitably bored for this purpose. A gasket 15is preferably employed to insure a sealing i'lt between the ring andhead. y

The shell 7 houses the cooling coil 8 one end 16 5.5 of which extendsthrough opening 16 in the head 13 and connects with the outlet 1'7 of anexpansion valve 18 andthe other end 19 passes through an opening 19' andconnects with the lnlet sideoi a compressor, not shown, and thencecommunicates with the inlet 20 of the expansion valve through pipe 21. Awell or tube 22 for housing a thermostatic element 23, is supported atone end in the inner end of a hollow boss 24 formed centrally of thehead 13 and is preferably secured by welding. The outer end of boss 24is internally threaded to receive an externally screw-threaded plug 25,through which a tube 25 leading from the element 23 extends and connectswith a thermostat, not shown. The appliances just described may be ofany known type or kind adapted to supply the cooling coil 8 with aliquid refrigerant, and preferably I use mechanism whereby refrigeratingoperations are controlled automatically, either by the pressure ortemperature pressure produced in the system.

The shell '7 is lled or partially liilled with brine, and metal fins 27soldered to and radiating from the shell facilitate the heat transferbetween the brine in the shell and the water in the outer chamber ortank 6.

Assembly of the refrigeratng unit disclosed in Fig. 2 can beaccomplished readily by sleeving the pipes 16-19 and 26 through the head13 and connecting the expansion valve 18 to pipe 16. This assembly thusbecomes a unit which can be inserted in or Withdrawn from the shell 7without the necessity of disconnecting any of the parts. Should aleakroocur in the coil 8 or other part of the cooling unit within theshell 7, the Water in the surrounding chamber or tank 6 will not becontaminated.

The modified form of invention disclosed in Fig. 5 is very similar tothe preferred form just described, but diiiers in the employment of aboiler in lieuvof the coil unit disclosed in the preferred embodiment.Thus, av shell or cylinder 28 commonly called a boiler welded to aninternal flange 29 formed on a head member 13', and extends within thecylinder shell '7 in spaced rela tion thereto, the space between the twoshells being filled or partially'filled with brine solution. Thus, theboiler 28 becomes an integral part of the head 13 and can be readilyremoved for re pairs or where it becomes desirable to insert arefrigerating coil unit such as disclosed in Figs. l and 2. An auxiliaryhead member 13 welded to the head 13 closes the opening 41 therein.

Liquid refrigerant is forced under pressure by a compressor, not shown,through pipe 30 to inlet opening 3l in the auxiliary head 13" incommuni-r cation With the interior of the boiler. rIhe inlet opening 31is controlled by a needle Valve 32 actuated by a float 33 pivotallyconnected to the head 13 by means of a lever which in turn connects Withthe needle valve by means of a short arm 35. As the refrigerant boils orbecomes gassied by the exchange or heat between the brine and thedrinking water, it escapes in gaseous forrn through outlet opening 36 inauxiliary head 13" and thence back to the compressor through outlet pipe37. Coupling members 38 and 39 for connecting the respective pipes 37and 30 to the auxiliary head are preferably Welded to the latter. A baiemember 4f) prevents the refrigerant from boiling over or escaping inliquid form.

It Will be obvious that the tank 6 and cylinder '7 could be made ofrectangular shape and that in such construction the ring l2 and coverineinber would also be rectangularly Shaped.

What I claim, is:

l. in a cooling device, a tank having an open ing at one end, a cylindersituated within said tank, means secured to the tank and to the cylinderfor supporting the latter, a cover member for closing said opening, acooling unit carried by said cover and situated within said cylinder andmeans for detachably connecting the cover member to said supportingmeans.

2. in a cooling device, a tank having an opening in one end Wall, acylinder Within said tank in spaced relation thereto, means connectingsaid end Wall and said cylinder together and forming a support for thecylinder, and a cover for said opening detachably connected to saidmeans, and a cooling unit carried by said cover and situated Within saidcylinder.

3. n a cooling` device, a tank having a substantially circular openingin one end Wall thereof, a cylinder open at one end positioned Withinsaid tank, said cylinder being of vless diameter than the diameter or"said opening, and having its open end axially aligned therewith, a ringinernber connecting said end Wall and the open end of said cylindeitightly together and forming a support for the cylinder, a cover memberfor the opening, a cooling unit carried by said cover situated Withinsaid cylinder, and means for detachaely connecting the cover member tosaid ring.

RCl-IARD H. BREWER.

